v6.20.5

We'd like to offer a big thanks to the 2 contributors who made this release possible. Here are some highlights ✨:

• 🐞 Bugfixes
• 📚 Documentation improvements

Data Grid

@mui/[email protected]

• [DataGridPremium] Fix onCellSelectionModelChange not triggered when additional cell range is selected (#14650) @arminmeh

Docs

• [docs] Fix "What's new in MUI X" link to use absolute URL @oliviertassinari

Core

• [core] Fix readme deploy instruction @oliviertassinari
• [core] Sync with core release flow @oliviertassinari